B-Roll

B-Roll is alternative footage that is intercut with the main shot or A-Roll footage.

This is usually for supplemental footage - Panning shots with accentuated colours or editing that just "look pretty"

Example: 1 Dollar Dumplings (3 Ways)

• Does not provide any context or information
• Audio is usually music
• Quick, cinematic shots that are heavily stylized and look very pretty

Wikipedia Article Merriam-Webster